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LUBRIGATOR.

No. 800,728. 'PatentedJune 17, 1884.

A Hornev Nrrnn STATES PATENT Brice..

CHARLES H.

PARSHALL, vOF DETROIT, MICHIGAN, ASSIGNOR TO THE MICHI- GAN LUBRICATORCOMPANY, OF SAME PLACE.

ITUBRICATO R.

SPECIFICATION forming part of Letters Patent No. 300,728, dated June1'7, 1884. Application flied rebrnry 13, 1884. (No man.)

object is to provide a mechanical feed for the supply of oil,which,while it shall be effective and reliable in action, shall be simple instructure, and readily kept in proper working condition. To this end Iemploy the steam taken from lone end of an engine-cylinder to actuate aplunger in one direction, and a coiled spring or its equivalent toactuate it in the other when the steam is exhausted from the chamberwhich gave the plunger its forward impulse. I control the admission ofthe steam to the auxiliary cylinder by a valve, which gives readycontrol to the length of the stroke of the pump-plunger. The pump isplaced in the interior of the oil-reservoir, but its valves are exteriorthereto, so as to be readily accessible. The pump draws its supply ofoil directly from the bottom of atrans-` parent chamber, in which adiminished atmospheric pressure is maintained by the action of the pump,and to which the oil is fed through a regulated pipev leading to thebottom of the oil-reservoir by the pressure of the atmosphere in thereservoir in excess of that in the vacuum sight-feed chamber.

In the annexed drawings, making a part of this specication, I haveillustrated my invention as applied to the cylinder of a steam-engine,steam from whichis withdrawn through the pipe A, tapped into thecylinder in or near the head, so as to receive steam only when the sameis admitted to the chamber at that end of the cylinder. Itis obviousthat the same end can be attained by tapping the feed-pipe A into thecylinder oi' a pump or any other receiver for a iiuid,whieh isalternately lled and emptied at regular intervals of not too longduration.

B is a globe or other suitable valve, by means of which the feed of theactuating-duid canbe 5o regulated at will.

C is an auxiliary cylinder properly tted to receive the plunger-head D,which, as illustrated, is a cup-formed plunger passing through thepacking-ring E, and carrying the pistonrod or plunger F, which passesthrough a stufling-box, G, into the cylinder H of the pump, of which itforms the reciprocating plunger. The cup-formed piston or plunger head Dalso incloses the lower end of a spiral spring, I, which is coiledaround the pistonrod F, and bears at its upper end against a cross-tree,K, attached to the frame L, which supports or is suspended from thelubricator. Vhen steam is admitted to the chamber of the cylinder towhich the pipe A connects, the communication with the auxiliary cylinderC being open, it will lill the chamber in the latter below the head Dand raise it. When the exhaust-port oil that end of the cylinder isopened, the pressure of steam being relieved, the coiled spring I willforce the'piston-head D down, and so that head will receiveareciprocating movement corresponding with that of the piston-head of theengine.

Instead of the coiled spring, the piston-head D may be otherwise loaded,so as to carry it down when relieved from the pressure of the steam.

Instead of the single-acting cylinder shown, a double-acting cylindermay be employed, the piston-rod F passing through a stuffingbox in theupper head, and a steam-pipe being also extended from theupper chamberof cylinder C to the chamber in the engine-cylinder on the opposite sideof its piston-head, so that the steam alternately admitted to theopposite ends of the engine-cylinder will in like manner actuate thepiston-head and plunger of the auxiliary cylinder. convenient, theplunger E may be actuated from any of the moving parts of the engine orother machine by any connecting mechanism which will communicate to itthe requisite reciprocating movement.

Thepumpcylinder,as illustrated,is screwed into the upper part, L', ofthe frame, and is formed with a chamber, H', in line with the plunger,F, which enters through the stufngbox, G, which is tapped into the lowerend of the pump-cylinder, and also with an oil in- Should it be moreduction-branch, H2, an oil eduction-opening, H3. The pump-cylinder isinclosed within the oil-reservoir M, which is screwed onto aflange, L2,on the upper face of frame L, and covered by a loose cap, M', whichopens the oil in the reservoir to the normal pressure of the atmosphere.An oil induction pipe, N, passes through the wall of the oil-reservoir,with a tight joint, and is tapped into the oil-induction branch H2 ofthe pump-cylinder. At the outer end of the induction-pipe is formed achamber, N2, by a partition, N3, as shown,and having the valve O, whichopens to admit the oil to the pump, but closes against pressure outwardfrom the pump. To this induction-pipe above the chamber N 2 a section ofglass tube, P, is attached by a packing-ring, P, and a similarpacking-ring, P, connects it with` the globe-valve Q, fitted with anozzle, Q', opening into the sight-chamber formed by the transparenttube P, and also with a valve, Q2, by which the inflow of oil, comingthrough the tube R, may be regulated. This tube R extends through thewall of the oil-reservoir,

with a tight-joint, and an extension, R', carries it nearly to thebottom of the oil-reservoir. The eduction-opening H.3 connects with theeduction-pipe S, which also passes through `to secure by Letters Patent,is-

the wall of the oil-reservoir with a tight joint, and outside thereservoir is fitted with a valve-seat, S', to receive theinwardly-opening valve T, which yields freely to any pressure from thepump outward, but closes against pressure inward toward the pump. Theoil is conducted through the pipe U to the part to be oiled, and may befitted with a check-valve at any point iu its length.

Provision is made for giving ready access to the different parts of themechanism. Thus a screw-plug, T', is placed above the valve T. Another,Hf, is placed above the chamber H' of the pump. Another, Q3, is placedabove the valve Q2. Another plug, O', is screwed into chamber N2, andhas a valveseat, O2,

and port connecting the chamber N2 with the induction-pipe N, above thevalve O. When this plug is removed, the valve comes with it.

The operation of the lubricator is as follows: Oil is supplied to thereservoir M by moving the cover M', filling it nearly to the tube R, andthere itis retained except when the machinery is in action. reservoirabove the tube R', it may be retained by closing the valve Q2 until themachinery is started. When the engine is put inmotion, the valve B isset so as to give whatever action is desired to the piston-head C. Itmay be made to traverse to full-stroke, or -to as short a one as isdesired by openingor closing the valve. This communicates areciprocating motion to the plunger F, exhaustingon its downwardmovement,and driving the oil in the pump-chamber H' withv itsJ forwardmovement out through the eduction-pipe and Vvalve T into pipe U, Theexhaust action of the plunger first draws the air out of the vac- If theoil fills the `it may be supplied in very slowly-forming drops, or morerapidly drop by drop, or in a slender continuous stream through thevacuum sight-chamber P and valve O to the pump. Thusthe supply of oil isnot only under the absolute command but also under the inspection of theengineer. Should it be desired 'in any particular case, a transparentsection can be inserted in any part of the pipe U to give sight of theoil flowing away from the pump and into the mechanism to be oiled.

As the operation of the apparatus depends entirely upon the action ofthe pump which maintains the partial vacuum in the trans parent chamber,it follows that the flow of the oil stops the instant the pump isstopped; There vwill therefore be none of the continued iow of the oil,which goes on filling the pipes and chambers in those lubricators inwhich the iiow of the oil is dependent upon gravity.

What I claim as my invention, and desire 1. In a lubricator, incombination with an oil-reservoir and overhead supply-pipe, a lift andforce pump, which raises the oil out of the reservoir and forces it alsoby the action `of the plunger, an auxiliary cylinder, C, and

plunger-head D,taking pressure in one direction from the-cylinder of theengine, and in the other from the spring I or its equivalent,

vsubstantially asset forth.

2. In combination with the oil-reservoir M of a lubricator, apump-cylinder placed inside the, reservoir, and having its valves O andT arranged, respectively, in the induction` and eduction pipes outsideof the reservoir, substantially as set forth.

3. In combination with the'pump and chamber P, the valve 0seated inl thechambered plug O', substantially as set forth.

4. In a lubricator, in combination with an oil-reservoir andpump, anintermediate transparent vacuum-chamber to which the oil is IOOsuppliedfrom a lower level by atmospheric pressure, substantially as setforth.

5. In combination, an oilreservoir and pump, and an intermediatetransparent chamber, P, and nozzle and valve QQi, for regu1at- `ing theVsupply of oil to the chamber, from lwhich it is withdrawn directly bythe` action of the pump as it is fed thereto, `substantially as setforth.

6. In combination withv the1oil-reservoir M and pump, the intermediateltransparent `vacuum-chamber, P, the feeding-valve Q,and pipe R R',bringing the oil from the; bottom of the l reservoir, and'induction-pipeN, and valve O,

for withdrawing the oil from the bottom-of the chamber, substantially asset forth.

7. In a lubricator, in combination with the ties, and be thence drawn bythe action of the oil-reservoir and pump, an intermediate transpump,substantially as set forth. 1o parent chamber, a pipe leading from saidres- As Witness my hand in the presence of two ervoir projecting intothe upper part of such subscribing witnesses.

5 chamber7 and a pipe leading from the lower CHARLES H. PARSHALL.

part of said chamber to the pump, whereby Attest: oil'delivered into theinterior of the chamber R. MASON,-

will fall through the same in visible quanti- EDWD GRACE.

